Felipe Giaffone narrowly beat fast-closing Sam Hornish Jr. for his first IRL victory. The 27-year-old Brazilian, whose best previous finish was second at Texas last year and at Nazareth, Pa., in April, led the final 39 laps on the 1.5-mile Kentucky Speedway tri-oval after the leaders made their final pit stops for fuel.

Sarah Fisher, the first woman to start from the pole in a major racing series, led the first 26 laps and finished eighth.